From: Kees Cook <keescook@chromium.org>
To: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Juergen Gross <jgross@suse.com>,
Stefano Stabellini <sstabellini@kernel.org>,
Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>,
xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: Re: [PATCH][next] xen: Replace one-element array with flexible-array member
Date: Fri, 3 Feb 2023 17:54:13 +0000 [thread overview]
Message-ID: <63dd4a45.170a0220.e6dee.365d@mx.google.com> (raw)
In-Reply-To: <Y9xjN6Wa3VslgXeX@work>
On Thu, Feb 02, 2023 at 07:28:23PM -0600, Gustavo A. R. Silva wrote:
> One-element arrays are deprecated, and we are replacing them with flexible
> array members instead. So, replace one-element array with flexible-array
> member in struct xen_page_directory.
>
> This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
> routines on memcpy() and help us make progress towards globally
> enabling -fstrict-flex-arrays=3 [1].
>
> This results in no differences in binary output.
>
> Link: https://github.com/KSPP/linux/issues/79
> Link: https://github.com/KSPP/linux/issues/255
> Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [1]
> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
--
Kees Cook
next prev parent reply other threads:[~2023-02-03 17:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-03 1:28 [PATCH][next] xen: Replace one-element array with flexible-array member Gustavo A. R. Silva
2023-02-03 17:54 ` Kees Cook [this message]
2023-02-13 8:12 ` Juergen Gross
2023-02-13 8:20 ` Juergen Gross
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